Chapter  13  Warning  CodesCP2000 
 
13-1 
Chapter 13 Warning Codes 
 
 
ID No.  Display on LCD Keypad  Warning Name  Description 
1 
 
Communication error 1 
(CE1) 
RS-485 Modbus illegal function code 
Action and Reset 
Action level  When the function code is not 03, 06, 10 and 63 
Action time  Immediately act 
Warning setting parameter  N/A 
Reset method 
“Warning” occurs when Pr.09-02=0 and the motor drive keeps running. The drive 
resets automatically when receiving the correct function code. 
Reset condition  Immediately reset 
Record  N/A 
Cause  Corrective Actions 
Incorrect communication 
command from upper unit 
Check if the communication command is correct. 
Malfunction caused by interference 
Verify the wiring and grounding of the communication circuit. It is recommended 
to separate the communication circuit from the main circuit, or wire in 90 degree 
for effective anti-interference performance. 
Different communication setting 
from the upper unit 
Check if the setting for Pr. 09-02 is the same as the setting for the upper unit. 
Disconnection or bad connection 
of the cable 
Check the cable and replace it if necessary. 
 
ID No.  Display on LCD Keypad  Warning Name  Description 
2 
 
Communication error 2 
(CE2) 
RS-485 Modbus illegal data address 
Action and Reset 
Action level  When the input data address is incorrect 
Action time  Immediately act 
Warning setting parameter  N/A 
Reset method 
“Warning” occurs when Pr.09-02=0 and the motor drive keeps running. The drive 
resets automatically when receiving the correct data address. 
Reset condition  Immediately reset 
Record  N/A 
Cause  Corrective Actions 
Incorrect communication 
command from upper unit 
Check if the communication command is correct. 
Malfunction caused by interference 
Verify the wiring and grounding of the communication circuit. It is recommended 
to separate the communication circuit from the main circuit, or wire in 90 degree 
for effective anti-interference performance. 
Different communication setting 
from the upper unit 
Check if the setting for Pr.09-02 is the same as the setting for the upper unit. 
Disconnection or bad connection 
of the cable 
Check the cable and replace it if necessary.